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/* This file is part of libbrandt.
* Copyright (C) 2016 GNUnet e.V.
*
* libbrandt is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* libbrandt is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* libbrandt. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file test_crypto.c
* @brief testing crypto and smc functions.
* @author Markus Teich
*/
#include "platform.h"
/* For testing static functions and variables we include the whole source */
#include "crypto.c"
#include "test.h"
static int
test_serialization ()
{
gcry_mpi_point_t oldp = gcry_mpi_point_new (0);
gcry_mpi_point_t newp = gcry_mpi_point_new (0);
gcry_mpi_t oldi = gcry_mpi_new (256);
gcry_mpi_t newi = gcry_mpi_new (256);
struct ec_mpi serp;
struct ec_mpi seri;
ec_keypair_create (oldp, oldi);
ec_point_serialize (&serp, oldp);
mpi_serialize (&seri, oldi);
ec_point_parse (newp, &serp);
mpi_parse (newi, &seri);
CHECK (!ec_point_cmp (oldp, newp), "serialization changed point");
CHECK (!gcry_mpi_cmp (oldi, newi), "serialization changed mpi");
mpi_serialize (&seri, GCRYMPI_CONST_ONE);
mpi_parse (newi, &seri);
CHECK (!gcry_mpi_cmp (GCRYMPI_CONST_ONE, newi), "serializing mpi 1 fail");
gcry_mpi_point_release (oldp);
gcry_mpi_point_release (newp);
gcry_mpi_release (oldi);
gcry_mpi_release (newi);
return 1;
}
static int
test_smc_zkp_dl ()
{
struct proof_dl proof;
gcry_mpi_t x = gcry_mpi_new (256);
gcry_mpi_point_t v = gcry_mpi_point_new (0);
ec_skey_create (x);
smc_zkp_dl (v, x, &proof);
CHECK (gcry_mpi_ec_curve_point (v, ec_ctx), "not on curve");
CHECK (!smc_zkp_dl_check (v, &proof), "zkp dl wrong");
gcry_mpi_release (x);
gcry_mpi_point_release (v);
return 1;
}
static int
test_smc_zkp_2dle ()
{
struct proof_2dle proof;
gcry_mpi_t x = gcry_mpi_new (256);
gcry_mpi_point_t g1 = gcry_mpi_point_new (0);
gcry_mpi_point_t g2 = gcry_mpi_point_new (0);
gcry_mpi_point_t v = gcry_mpi_point_new (0);
gcry_mpi_point_t w = gcry_mpi_point_new (0);
ec_keypair_create (g1, x);
ec_keypair_create (g2, x);
smc_zkp_2dle (v, w, g1, g2, x, &proof);
CHECK (gcry_mpi_ec_curve_point (g1, ec_ctx), "not on curve");
CHECK (gcry_mpi_ec_curve_point (g2, ec_ctx), "not on curve");
CHECK (gcry_mpi_ec_curve_point (v, ec_ctx), "not on curve");
CHECK (gcry_mpi_ec_curve_point (w, ec_ctx), "not on curve");
CHECK (!smc_zkp_2dle_check (v, w, g1, g2, &proof), "zkp 2dle wrong");
gcry_mpi_release (x);
gcry_mpi_point_release (g1);
gcry_mpi_point_release (g2);
gcry_mpi_point_release (v);
gcry_mpi_point_release (w);
return 1;
}
static int
test_smc_zkp_0og ()
{
struct proof_0og proof;
gcry_mpi_point_t y = gcry_mpi_point_new (0);
gcry_mpi_point_t alpha = gcry_mpi_point_new (0);
gcry_mpi_point_t beta = gcry_mpi_point_new (0);
/* get random public key point. We don't need the secret key to check the
* proof here */
ec_keypair_create (y, NULL);
smc_zkp_0og (tests_run % 2, y, NULL, alpha, beta, &proof);
CHECK (gcry_mpi_ec_curve_point (alpha, ec_ctx), "not on curve");
CHECK (gcry_mpi_ec_curve_point (beta, ec_ctx), "not on curve");
CHECK (!smc_zkp_0og_check (y, alpha, beta, &proof), "zkp 0og is wrong");
gcry_mpi_point_release (y);
gcry_mpi_point_release (alpha);
gcry_mpi_point_release (beta);
return 1;
}
int
main (int argc, char *argv[])
{
int repeat = 1;
struct GNUNET_CRYPTO_EccDlogContext *edc;
if (GNUNET_OK != GNUNET_log_setup ("test_crypto", "WARNING", NULL))
return 1;
edc = GNUNET_CRYPTO_ecc_dlog_prepare (1024, 16);
BRANDT_init (edc);
/* tests that need to run only once */
RUN (test_serialization);
for (tests_run = 0; tests_run < repeat; tests_run++)
{
RUN (test_smc_zkp_dl);
RUN (test_smc_zkp_2dle);
RUN (test_smc_zkp_0og);
}
GNUNET_CRYPTO_ecc_dlog_release (edc);
return ret;
}
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